Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
  • A61K31/565—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol
  • A61K31/568—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstanes, e.g. testosterone
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
  • A61K31/565—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
  • A61K31/565—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol
  • A61K31/567—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol substituted in position 17 alpha, e.g. mestranol, norethandrolone
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
  • A61K31/565—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol
  • A61K31/568—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstanes, e.g. testosterone
  • A61K31/5685—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids not substituted in position 17 beta by a carbon atom, e.g. estrane, estradiol substituted in positions 10 and 13 by a chain having at least one carbon atom, e.g. androstanes, e.g. testosterone having an oxo group in position 17, e.g. androsterone
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
  • A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P35/00—Antineoplastic agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P5/00—Drugs for disorders of the endocrine system
  • A61P5/24—Drugs for disorders of the endocrine system of the sex hormones
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07J—STEROIDS
  • C07J1/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07J—STEROIDS
  • C07J1/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
  • C07J1/0003—Androstane derivatives
  • C07J1/0011—Androstane derivatives substituted in position 17 by a keto group
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07J—STEROIDS
  • C07J1/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
  • C07J1/0003—Androstane derivatives
  • C07J1/0018—Androstane derivatives substituted in position 17 beta, not substituted in position 17 alfa
  • C07J1/0022—Androstane derivatives substituted in position 17 beta, not substituted in position 17 alfa the substituent being an OH group free esterified or etherified
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07J—STEROIDS
  • C07J1/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
  • C07J1/0003—Androstane derivatives
  • C07J1/0018—Androstane derivatives substituted in position 17 beta, not substituted in position 17 alfa
  • C07J1/0022—Androstane derivatives substituted in position 17 beta, not substituted in position 17 alfa the substituent being an OH group free esterified or etherified
  • C07J1/0025—Esters
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07J—STEROIDS
  • C07J1/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, not substituted in position 17 beta by a carbon atom, e.g. estrane, androstane
  • C07J1/0003—Androstane derivatives
  • C07J1/0033—Androstane derivatives substituted in position 17 alfa and 17 beta
  • C07J1/004—Androstane derivatives substituted in position 17 alfa and 17 beta the substituent in position 17 alfa being an unsaturated hydrocarbon group
  • C07J1/0048—Alkynyl derivatives
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07J—STEROIDS
  • C07J31/00—Normal steroids containing one or more sulfur atoms not belonging to a hetero ring
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07J—STEROIDS
  • C07J41/00—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring

Definitions

• the invention provides methods and compositions comprising steroids or analogs, such as analogs of androst-5-ene-3 ⁇ ,17 ⁇ -diot (“AED”) or 1,3,5(10)-estratriene-17 ⁇ -ethynyl-3 ⁇ ,17 ⁇ -diol (“EED”) for use as agents to modulate the biological activity of the androgen receptor (“AR") or two treat androgen responsive or related conditions such as prostate cancer and benign prostatic hypertrophy (“BPH").
• steroids or analogs such as analogs of androst-5-ene-3 ⁇ ,17 ⁇ -diot (“AED”) or 1,3,5(10)-estratriene-17 ⁇ -ethynyl-3 ⁇ ,17 ⁇ -diol (“EED”) for use as agents to modulate the biological activity of the androgen receptor (“AR”) or two treat androgen responsive or related conditions such as prostate cancer and benign prostatic hypertrophy (“BPH").
• AED androst-5-ene-3 ⁇ ,17 ⁇ -diot
• Prostate cancer represents the most commonly diagnosed non-cutaneous malignancy in aging mates and is the second leading cause of cancer-related death in North American men. Androgen ablation has been the cornerstone of treatment for advanced forms of this disease, typically by a combination of surgical or medial antiandrogen therapy. Antiandrogens that are commonly used include hydroxyflutamide (HF), cyproterone acetate and bicalutamide (casodex), Androgen ablation treatments are used to reduce the level of endogenous androgens. However, most androgen-dependent prostate cancer cases appear to progress to androgen-independent malignancies.
• HF hydroxyflutamide
• casodex bicalutamide
• Androgen ablation treatments are used to reduce the level of endogenous androgens.
• most androgen-dependent prostate cancer cases appear to progress to androgen-independent malignancies.
• BPH is a disease that affects approximately 60% of males older than about 60 years of age.
• An elevated accumulation of male hormones such as dihydrotestosterone ("DHT") in prostate tissue may contribute to prostate enlargement.
• DHT dihydrotestosterone
• the accumulation of DHT appears to result from elevated intracellular DHT preceptor levels.
• the increase is associated with an elevation of estrogen levels relative to androgen levels, which decrease with age.
• the urological symptoms consist in an elevated frequency of miction due to elevated residual urine. This is typically accompanied by a weak flow of urine, a time-delayed start of miction, and repeated infections of the bladder and kidneys.
• BPH treatment includes surgery to remove the obstruction, but this is not always effective or has unwanted side-efects, e.g., incontinence or decreased libido.
• Chemotherapy for conditions such as prostate cancer and BPH, or their smptoms include administering androgen synthesis inhibitors such as 5 ⁇ reductase inhibitors to inhibit production of sex hormones such as testosterone or dihydrotestosterone, or administering Naftopidil for dysuria.
• Treatment with 5 ⁇ reductase inhibitors has been combined with other treatments such as antiestrogens, aromatase (estrogen synthetase) inhibitors, inhibitors of 17 ⁇ - hydroxysteroid dehydrogenase or lutenizing hormone releasing hormone agonists or antagonists.
• Other proposed treatments include administering aromatase inhibitors such as 4-hydroxyandrostene-3,17-dione.
• Chemotherapy typically has drawbacks. It can have unwanted side effects, particularly in older patients or it can become ineffective over time.
• Various treatments and their limitations have been described, see, e.g., U.S. patents 4,059,630 , 4,310,523 , 4,659,695 , 4,970,204 , 5,137,882 , 5,372,996 , 5,494,914 , 5,561,124 , 5,593,981 , 5,994,334 , 5,994,335 , 5,998,377 , 6,015,806 , 6,093,722 , 6,110,906 and European publication EP 0 401 653 .
• the androgen receptor and co-activators such as ARA 70 , ARA 24 , ARA 54 , ARA 55 and Rb, and methods to use them have been described, e.g., U.S. patent 5789170 , 5614620 ; International publication number WO 00/04152 .
• invention objects include providing methods and compositions to inhibit proliferation of prostate cancer cells a subject.
• Other objects are to provide methods to make and use compositions and formulation comprising EED analogs or other compounds disclosed herein. Additional objects will be apparent from the disclosure,
• the invention provides a method to treat or prevent an androgen responsive such as prostate cancer, benign prostatic hyperplasia or cancer in a subject, or to ameliorate one or more symptoms thereof, comprising administering to a subject, or delivering to the subject's tissues, an effective amount of a compound of formula 1 or 2 wherein, R 1 -R 28 independently are -H, -OR PR , -SR PR , -N(R PR ) 2 , -O-Si-(R A ) 3 , -CN, - NO 2 , -OSO 3 H, -OPO 3 H, an ester, a phosphoester, a phosphonoester, a sulfite ester, a sulfate ester, an amide, an amino acid, a peptide, an ether, a thioether, an acyl group, a carbonate, a carbamate, a slufonamide, a hal
• a "subject” means a human or animal. Usually the animal is a vertebrate such as a primate, rodent, domestic animal or game animal. Primates include chimpanzees, cynomologous monkeys, spider monkeys, and macaques, e.g., Rhesus. Rodents include mice, rats, woodchucks, ferrets, rabbits and hamsters. Domestic and game animals include cows, horses, pigs, deer, bison, buffalo, felines, e.g., domestic cat, dogs, e.g., domestic dog, wolf, birds, e.g., chicken, turkey, emu, ostrich, and fish, e.g., trout, catfish and salmon. Subject includes any subset of the foregoing, e.g., all of the above, but excluding one or more groups or species such as humans, primates or rodents.
• a formula 1 compound means compounds, compositions or formulations where one or more than one formula 1 (or formula 2) compound is present, typically 1, 2, 3 or 4, usually 1.
• a “mimetic of a formula or 2 compound” or a “mimetic of EED” means any compound, steroid or non-steroid (e.g., a compound disclosed in one or more of the references cited herein), that qualitatively or quantitatively induces the same or similar biological response to a any significant degree that one or more formula 1 compounds or EED induces.
• Biological responses include modulation of AR-mediated transcription or inhibition of replication of calls, e.g., prostate cancer cells.
• a mimetic of a formula 1 or 2 compound e.g.
• EED will induce at least about 35%, preferably at about 50%, of the biological response that the formula 1 or 2 compound induces as optionally compare to suitable controlled and untreated reference cells, cell population ( in vitro or in vivo ) or subjects.
• the biological response will be defined by measuring one, two, three or more parameters, e.g., modulation of the synthesis of one or more gene products or modulation of cell replication,
• Alkyl as used here means linked normal, secondary, tertiary or cyclic carbon atoms, i.e., linear, branched or cyclic.
• the number of carbon atoms in an alkyl group or moiety is 1 to about 20, unless otherwise specified, e.g., C 1-8 alkyl means an alkyl moiety containing 1, 2, 3, 4, 5, 6, 7 or 8 carbon atoms.
• Example include methyl, ethyl, 1-propyl ( n- propyl), 2-propyl ( i- propyl, -CH(CH 3 ) 2 ), 1-butyl ( n- butyl), 2-methyl-1-propyl ( i- butyl, -CH 2 CH(CH 3 ) 2 ), 2-butyl ( s- butyl, -CH(CH 3 )CH 2 CH 3 ), 2-methyl-2-propyl ( t- butyl, -C(CH 3 ) 3 ), 1-pentyl ( n- pentyl), 2-pentyl (-CH(CH 3 )CH 2 CH 2 CH 3 ), 3-pentyl (-CH(CH 2 CH 3 ) 2 ), 2-methyl-2-butyl (-C(CH 3 ) 2 CH 2 CH 3 ), 3-methyl-2-butyl (-CH(CH 3 )CH(CH 3 ) 2 ), 3-methyl-1-butyl (-CH 2 CH 2 CH(CH 3
• the number of carbon atoms in an alkenyl group or moiety is 2 to about 20, unless otherwise specified, e.g., C 2-8 alkenyl means an alkenyl moiety containing 2, 3, 4, 5, 6, 7 or 8 carbon atoms.
• Alkynyl means linked normal, secondary, tertiary or cyclic carbon atoms where one or more triple bonds (-C ⁇ C-) are present, typically 1, 2 or 3, usually 1.
• the number of carbon atoms in an alkynyl group or moiety is 2 to about 20, unless otherwise specified, e.g., C 2-8 alkynyl means an alkynyl moiety containing 2, 3, 4, 5, 6, 7 or 8 carbon atoms.
• Aryl means phenyl or naphthyl.
• Aryl-alkyl aryl-alkenyl
• aryl-alkynyl respectively mean an aryl moiety bonded to an alkyl, alkenyl or alkynyl group, wherein aryl, alkyl, alkenyl and alkynyl have the meanings defined above.
• Substituted alkyl mean an alkyl, alkenyl, alkynyl, aryl-alkyl, aryl-alkenyl or ayl-alkynyl group respectively, that comprises 1, 2, 3 or more independently selected substituents bonded to a carbon atom or 1, 2, 3 or more independently selected substituents that replace or interrupt any carbon atom chain or ring.
• Substituents include ethers (-O-), ketones (-C(O)-), -OR PR (including - OH), -C(O)OR PR (including -C(O)OH), -C(O)O-, -C(S)OR PR , -C(S)O-, -OC(O)-, - C(O)H, -OCH 2 -, -OCH 2 CH 2 -, -OCH 2 O-, -OCH 2 CH 2 O-, -NR PR -, -N(R PR ) 2 , -NHR PR , - NHC(O)-, -CH 2 -NR PR -, -CH 2 -NHR PR , -CH 2 -NHC(O)-, -C(O)NH-, -C(O)NHR PR , -OC(O)NR PR -, -OC(O)NHR PR , -NR PR C(O)NR
• alkenyl, alkynyl, aryl-alkenyl and aryl-alkynyl groups comprise one, two, three or more substituents, and such substituents are optionally bonded to a carbon atom that is one or more methylene moiety removed from the double bond, i.e., the substituent is separated at least by 1, 2, 3 or more -CH 2 - moieties from a double bond.
• Heterocycle or “heterocyclic” includes by way of example and not limitation these heterocycles described in Paquette, Leo A.; “Principles of Modern Heterocyclic Chemistry” (W. A. Benjamin, New York, 1968), particularly Chapters 1, 3, 4, 6, 7, and 9 ; “ The Chemistry of Heterocyclic Compounds, A series of Monographs” (John Wiley & Sons, New York, 1950 to present), in particular Volumes 13, 14, 16, 19, and 28 ; and J. Am. Chem. Soc. 1960, 82:5566 .
• heterocycles include by way of example and not limitation pyridyl, thiazolyl, tetrahydrothiophenyl, sulfur oxidized tetrahydrothiophenyl, pyrimidinyl, furanyl, thienyl, pyrrolyl, pyrazolyl, Imidazolyl, tetrazolyl, benzofuranyl, thianaphthalenyl, indolyl, indolenyl, quinolinyl, isoquinolinyl, benzimidazolyl, piperidinyl, 4-piperidonyl, pyrrolidinyl, 2-pyrrolidonyl, pyrrolinyl, tetrahydrofuranyl, tetrahydroquinolinyl, tetrahydroisoquinolinyl, decahydroquinolinyl, octahydroisoquinolinyl, azocinyl, triazinyl
• carbon bonded heterocycles are bonded at position 2, 3, 4, 5, or 6 of a pyridine, position 3, 4, 5, or 6 of a pyridazine, position 2, 4, 5, or 6 of a pyrimidine, position 2, 3, 5, or 6 of a pyrazine, position 2, 3, 4, or 5 of a furan, tetrahydrofuran, thiofuran, thiophene, pyrrole or tetrahydropyrrole, position 2, 4, or 5 of an oxazole, imidazole or thiazole, position 3, 4, or 5 of an isoxazole, pyrazole, or isothiazole, position 2 or 3 of an aziridine, position 2, 3, or 4 of an azetidine, position 2, 3, 4, 5, 6, 7, or 8 of a quinoline or position 1, 3, 4, 5, 6, 7, or 8 of an isoquinoline.
• carbon bonded heterocycles include 2-pyridyl, 3-pyridyl, 4-pyridyl, 5-pyridyl, 6-pyridyl, 3-pyridazinyl, 4-pyridazinyl, 5-pyridazinyl, 6-pyridazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 6-pyrimidinyl, 2-pyrazinyl, 3-pyrazinyl, 5-pyrazinyl, 6-pyrazinyl, 2-thiazolyl, 4-thiazolyl, or 5-thiazolyl.
• nitrogen bonded heterocycles are bonded at position 1 of an aziridine, azetidine, pyrrole, pyrrolidine, 2-pyrroline, 3-pyrroline, imidazole, imidazolidine, 2-imidazoline, 3-imidazoline, pyrazole, pyrazoline, 2-pyrazoline, 3-pyrazoline, piperidine, piperazine, indole, indoline, 1H-indazole, position 2 of a isoindole, or isoindoline, position 4 of a morpholine, and position 9 of a carbazole, or ⁇ -carboline.
• nitrogen bonded heterocycles include 1-aziridyl, 1-azetedyl, 1-pyrrolyl, 1-imidazolyl, 1-pyrazolyl, and 1-piperidinyl.
• Heteroaryl or “heteroaromatic” means an aromatic ring or two or more fused rings that contain one or more aromatic rings where the ring or fused rings comprise 1, 2, 3 or more heteroatoms, usually oxygen (-O-), nitrogen (-NR PR -) or sulfur (-S-) where R PR is -H, a protecting group, optionally substituted C 1-8 alkyl, optionally substituted C 2-8 alkenyl or optionally substituted C 2-8 alkynyl, usually -H. Examples are as described for heterocycle and heteroaryl or heteroaromatic groups comprise a subset of heterocycles.
• Alcohol as used herein means an alcohol that comprises a C 1-20 alkyl moiety substituted at one, two or more hydrogen atoms with one, two or more hydroxyl groups.
• Alcohols include ethanol, n- propanol, i- propanol, n- butanol, i- butanol, s- butanol, t -butanol, n- pentanol, i- pentanol, n- hexanol, cyclohexanol, n- heptanol, n- octanol, n- nonanol, n- decanol, ethylene glycol and glycerol.
• the carbon atoms in alcohols can be straight, branched or cyclic.
• Alcohol includes any subset of the foregoing, e.g., C 1-6 alcohols (alcohols having 1, 2, 3, 4, 5 or 6 carbon atoms).
• Halogen means fluorine, chlorine, bromine or iodine.
• Protecting group” or “R PR” means a moiety that prevents the atom to which it is linked from participating in unwanted reactions, or it limits such reactions.
• R PR may be hydrogen or a protecting group for the oxygen atom found in a hydroxyl.
• R PR may be hydrogen or a carboxyl protecting group
• R PR may be hydrogen or a protecting group for sulfur in thiols for instance
• R PR may be hydrogen or a nitrogen atom protecting group for primary or secondary amines.
• One or more hydroxyl, thiol, amine or other reactive groups may be found in formula 1 or formula 2 compounds. These groups may require protection against reactions taking place elsewhere in the molecule.
• the protecting groups for oxygen, sulfur or nitrogen atoms, or for reactive grops containing heteroatoms, are used, for example, to prevent unwanted reactions with electrophilic compounds, such as acylating used, e.g., in steroid chemistry.
• Protecting groups as used herein comprise noncyclic or cyclic protecting groups, which have been extensively described, e.g., " Protective Groups in Organic Chemistry", Theodora W. Greene (John Wiley & Sons, Inc., New York, 1991, ISBN 0-471-62301-6 ) (hereafter “Greene”) and will not be detailed here. The corresponding cleavage reactions have also been described, e.g., Greene.
• these protecting groups are groups that can be removed from the molecule of the invention without irreversibly changing the covalent bond structure or oxidation/reduction state of the remainder of the molecule.
• -R PR when -R PR is a removable protecting group that is bonded to a -O- or -NH- group, it is removed to form -OH or -NH 2 , respectively, without affecting other covalent bonds in the molecule.
• the protecting group will not be removable without affecting other covalent bonds in the molecule. More than one protecting group can be removed at a time, or they can be removed sequentially.
• the formula 1 or 2 compounds may contain one or more than one protecting group, which may be the same or different.
• Removable protecting groups are usually removed by known procedures, although it will be understood that the protected intermediates fall within the scope of this invention. The removal of the protecting group may require several steps or removal may be straight-forward, depending upon the economics and nature of the conversions involved. In general, one will use a protecting group with exocyclic amines or with carboxyl groups during synthesis of a formula 1 on 2 compound. For most therapeutic applications protected groups will be deprotected, unless the protecting group is one that can be removed under physiological conditions. Protecting groups commonly are employed to protect against covalent modification of a sensitive group in reactions such as alkylation or acylation. Ordinarily, protecting groups are removed by, e.g. hydrolysis, elimination or aminolysis.
• a group is a protecting group if when, based on mole ratio, 90% of that protecting group has been removed by a deprotection reaction, no more than 50%, preferably no more than 25%, more preferably no more than 10%, of the deprotected product molecules have undergone changes to their covalent bond structure or oxidation/reduction state other than those occasioned by the removal of the protecting group.
• the mole ratios are determined when all of the groups of that type are removed.
• each type of protecting group is treated (and the mole ratios are determined) independently or together with others depending on whether the deprotection reaction conditions pertinent to one type are also pertinent to the other types present.
• a group is a protecting group if when, based on mole ratio determined by conventional techniques, 90% of that protecting group has been removed by a conventional deprotection reaction, no more than 50%, preferably 25%, more preferably 10%, of the deprotected product molecules of the invention have undergone irreversible changes to their covalent bond structure or oxidation/reduction state other than those occasioned by the removal of the protecting group. Irreversible changes require chemical reactions (beyond those resulting from aqueous hydrolysis, acid/base neutralization or conventional separation, isolation or purification) to restore the covalent bond structure or oxidation/reduction state of the deprotected molecule of the invention.
• esters means a moiety that comprises a -C(O)-O- structure.
• esters as used here, comprise an organic moiety containing about 1-50 carbon atoms, usually about 2-18 carbon atoms, and 0 to about 10 independently selected heteroatoms (e.g., O, S, N, P, Si, F, Cl, Br, I), usually about 1-6 heteroatoms, linked to a formula 1 or formula 2 steroid nucleus at 1, 2, 3, 4 or more of R 1 -R 28 through the -C(O)-O- structure, e.g., organic moiety-C(O)-O-steroid or organic moiety-O-C(O)-steroid.
• heteroatoms e.g., O, S, N, P, Si, F, Cl, Br, I
• each ester moiety is independently selected.
• the organic moiety usually comprises one or more of any of the organic groups described above, e.g., C 1-20 alkyl moieties, C 2-20 alkenyl moieties, C 2-20 alkynyl moieties, aryl moieties, C 2-9 heterocycles, an ester moiety or substituted derivatives of any of these.
• substitutions are independently chosen.
• the organic moieties exclude obviously unstable moieties, e.g., -O-O-, except where such unstable moieties, are transient species that one can use to make a compound with sufficient chemical stability for the one or more of the uses described herein.
• the substitutions listed above are typically substituents that one can use to replace a one or more carbon atoms, e.g., -O- or -C(O)-, or one or more hydrogen atom, e.g., halogen, -NH 2 or -OH.
• the ester is unsubstituted, i.e., H-C(O)-O-steroid.
• Thioester means a moiety that comprises a -C(S)-O- structure.
• thioesters as used here comprise a hydrogen atom or an organic moiety containing about 1-50 carbon atoms and 0 to about 10 independently selected heteroatoms (e.g., O, S, N, P, Si) linked to a formula 1 or 2 steroid nucleus at 1, 2, 3, 4 or more of R 1 -R 28 through the -C(S)-O- structure, e.g., organic moiety-C(S)-O-steroid or organic moiety-O-C(S)-steroid.
• the organic moiety is as described above for esters.
• the thioester is unsubstituted, i.e., H-C(S)-O-steroid.
• Phosphoester or "phosphate ester” means a moiety that comprises a -O-P(OR PR )(O)-O- structure where R PR is hydrogen (-H), a protecting group or an organic moiety as described for esters.
• phosphoesters as used here comprise a hydrogen atom, a protecting group or an organic moiety containing about 1-50 carbon atoms and 0 to about 10 independently selected heteroatoms (e.g., O, S, N, P, Si) linked to a formula 1 or 2 steroid nucleus at 1, 2, 3, 4 or more of R 1 -R 28 through the -O-P(OR PR )(O)-O- structure, i.e., organic moiety-O-P(OR PR )(O)-O-steroid.
• the organic moiety is as described above for esters.
• the phosphate ester is unsubstituted, e.g., HO-P(OR PR )(O)-O-steroid.
• Phosphonoester means a moiety that comprises 1, 2, 3, 4 or more, typically only 1, -P(OR PR )(O)-O- structure where R PR is -H, a protecting group or an organic moiety as described for esters.
• phosphonoesters as used here comprise a hydrogen atom, a protecting group or an organic moiety containing about 1-50 carbon atoms and 0 to about 10 independently selected heteroatoms (e.g., O, S, N, P, Si) linked to a formula 1 or 2 steroid nucleus at 1, 2, 3, 4 or more of R 1 -R 28 through the -P(OR PR )(O)-O- structure, i.e., organic moiety-P(OR PR )(O)-O-steroid or steroid-P(OR PR )(O)-O-organic moiety.
• the organic moiety is as described above for esters.
• the phosphonoester is unsubstituted, e.g.,
• Sulfate ester means a moiety that comprises 1, 2, 3, 4 or more -O-S(O)(O)-O- structure, usually 1.
• sulfate esters as used here comprise a hydrogen atom, a protecting group or an organic impiety containing about 1-50 carbon atoms and 0 to about 10 independently selected heteroatoms (e.g., O, S, N, P, Si) linked to a formula 1 or 2 steroid nucleus at 1, 2, 3, 4 or more of R 1 -R 28 through the -O-S(O)(O)-O- structure, e.g., organic moiety-O-S(O)(O)-O-steroid.
• the organic moiety is as described above for esters.
• the sulfate ester is unsubstituted, i.e., HO-S(O)(O)-O-steroid.
• “Sulfite ester” means a moiety that comprises 1, 2, 3, 4 or more -O-S(O)-O-structures, usually 1.
• sulfite esters as used here comprise an organic moiety containing about 1-50 carbon atoms and 0 to about 10 independently selected heteroatoms (e.g., O, S, N, P, Si) linked to a formula 1 or 2 steroid nucleus at 1, 2, 3, 4 or more of R 1 -R 28 through the -O-S(O)-O- structure, e.g., organic moiety-O-S(O)-O-steroid.
• the organic moiety is as described above for esters.
• the sulfite ester is unsubstituted, i.e., HO-S(O)-O-steroid.
• Sulfonamide means a moiety that comprises 1, 2, 3, 4 or more -S(O)(O)-N(R A )(R B ) or -S(O)(O)-N(R A )- structures, usually 1, where R A and R B independently are -H, a protecting group, an organic moiety (as described for esters), or both R A and R B together comprise a protecting group.
• sulfonamides as used here comprise an organic moiety containing about T-50 carbon atoms and 0 to about 10 independently selected heteroatoms (e.g., O, S, N, P, Si) linked to a formula 1 or 2 steroid nucleus at 1, 2, 3, 4 or more of R 1 -R 28 through the -O-S(O)-O- structure, e.g., organic moiety-S(O)(O)-NH-steroid or N(R A )(R B )-S(O)(O)-steroid.
• the Organic moieties are as described above for esters, e.g., moieties that comprise 1 to about 22 carbon atoms and up to about 10 independently selected heteroatoms.
• the sulfonamide is unsubstituted, e.g., H 2 N-S(O)(O)-steroid.
• Amide means an organic moiety as described for ester that comprises 1, 2, 3, 4 or more -C(O)NR PR - moieties, usually 1 or 2, where R PR is -H or a protecting group, R PR is usually H.
• the -C(O)NR PR - group is linked to the steroid nucleus at 1, 2, 3, 4 or more of R 1 -R 28 through the -NR PR - moiety, e.g., organic moiety-C(O)-NR PR -steroid or steroid-C(O)-NR PR -organic moiety.
• the organic moiety is as described above for esters.
• the amides is unsubstituted, i.e., H 2 N-C(O)-steroid or HC(O)-NH-steroid.
• “Ether” means an organic moiety as described for ester that comprises 1, 2, 3, 4 or more -O- moieties, usually 1 or 2.
• the -O- group is linked to the steroid nucleus at 1, 2, 3, 4 or more of R 1 -R 28 through the -O- moiety, e.g., organic moiety-O-steroid.
• the organic moiety is as described above for esters.
• Thioether means an organic moiety as described for ester that comprises 1, 2, 3, 4 or more -S- moieties, usually 1 or 2.
• the -S- group is linked to the steroid nucleus at 1, 2, 3, 4 or more of R 1 -R 28 through the -S- moiety, e.g., organic moiety-S-steroid.
• the organic moiety is as described above for esters.
• Acyl group means an organic moiety as described for ester that comprises 1, 2, 3, 4 or more -C(O)- groups.
• the -C(O)- group is linked to the steroid nucleus at 1, 2, 3, 4 or more of R 1 -R 28 , e.g., organic moiety-C(O)-steroid.
• the organic moiety is as described above for esters.
• An unsubstituted acyl group comprises a HC(O)- moiety, e.g., linked to the steroid nucleus.
• Carbonate means an organic moiety as described for ester that comprises 1, 2, 3, 4 or more -O-C(O)-O- structures.
• carbonate groups as used here comprise an organic moiety containing about 1-50 carbon atoms and 0 to about 10 independently selected heteroatoms (e.g., O, S, N, P, Si) linked to a formula 1 or formula 2 steroid nucleus at 1, 2, 3, 4 or more of R 1 -R 28 through the -O-C(O)-O-structure, e.g., organic moiety-O-C(O)-O-steroid.
• the organic moiety is as described above for esters.
• An unsubstituted carbonate group comprises a HO-C(C))-O-moiety, e.g., linked to the steroid nucleus.
• “Carbamate” means an organic moiety as described for that comprise 1, 2, 3, 4 or more -O-C(O)NR PR - structures where R PR is -H, a protecting group or an organic moiety as described for ester.
• carbamate groups as used here comprise an organic moiety containing about 1-50 carbon atoms and 0 to about 10 independently selected heteroatoms (e.g., O, S, N, P, Si) linked to a formula 1 or formula 2 steroid nucleus at one or more of R 1 -R 28 through the -O-C(O)-NR PR -structure, e.g., organic moiety-O-C(O)-NR PR -steroid or steroid-O-C(O)-NR PR -organic moiety.
• An unsubstituted carbamate group comprises a HO-C(O)-NH- or H 2 N-C(O)-O- moiety, e.g., linked to the steroid nucleus.
• monosaccharide means a polyhydroxy aldehyde or ketone having the empirical formula (CH 2 O) n where n is 3, 4, 5, 6 or 7.
• Monosaccharide includes open chain and closed chain forms, but will usually be closed chain forms.
• Monosaccharide includes hexofuranose and pentofuranose sugars such as 2'-deoxyribose, ribose, arabinose, xylose, their 2'-deoxy and 3'-deoxy derivatives and their 2',3'-dideoxy derivatives.
• Monosaccharide also include the 2',3' dideoxydidehydro derivative of ribose.
• Monosaccharides include the D-, L- and DL-isomers of glucose, fructose, mannose, idose, galactose, allose, gulose, altrose, talose, fucose, erythrose, threose, lyxose, erythrulose, ribulose, xylulose, ribose, arabinose, xylose, psicose, sorbose, tagatose, glyceraldehyde, dihydroxyacetone and their monodeoxy derivatives such as rhamnose. Monosaccharides are optionally protected or partially protected.
• the formula 1 and formula 2 compounds may comprise 1, 2, 3 or more independently selected monosaccharides at one or more of R 1 -R 28 .
• Disaccharide and oligosaccharide mean a moiety that comprises respectively two or more linked monosaccharides.
• Substituted disaccharide or substituted oligosaccharide means a moiety that comprises two or more linked monosaccharides, at least one of which is a substituted monosaccharide.
• the formula 1 and formula 2 compounds may comprise 1, 2, 3 or more independently selected disaccharides or oligosaccharides at one or more of R 1 -R 28 .
• Optionally substituted alkyl group, optionally substituted alkenyl group, optionally substituted alkynyl group, optionally substituted aryl moiety and optionally substituted heterocycle mean substitutions of C 1-20 alkyl moieties, C 2-20 alkynyl moieties, C 2-20 alkynyl moieties, aryl moieties, C 2-9 heterocycles or substituted derivatives of any of these.
• Optional substituted "monosaccharide” comprise any C3-C7 sugar, in the D-, L- or DL-configurations, e.g., erythrose, glycerol, ribose, deoxyribose, arabinose, glucose, mannose, galactose, fucose, mannose, glucosamine, N-acetylneuraminic acid, N-acetylglucosamine, N-acetylgalactosamine or glucuronic acid, that is optionally substituted at one or more hydroxyl groups.
• Suitable substitutions include hydrogen, protected hydroxyl, carboxyl, azido, cyano, acetyl, -O-C 1-6 alkyl, -S-C 1-6 alkyl, -O-C 2-6 alkenyl, -S-C 2-6 alkenyl, optionally protected amine, optionally protected carboxyl, halogen, thiol, protected thiol or substituents as described for substituted alkyl groups.
• the linkage between the monosaccharide the steroid is ⁇ or ⁇ .
• Optionally substituted "oligosaccharide” comprises two, three, four or more of any C3-C7 sugars that are covalently linked to each other.
• the linked sugars may have D-, L- or DL-configurations. Suitable sugars and substitutions are as described for monosaccharides.
• the linkage between the oligosaccharide and the steroid is ⁇ or ⁇ , as are the linkages between the monosaccharides that comprise the oligosaccharide.
• Nucleoside includes 3TC, AZT, D4T, ddl, ddC, G, A, U, C, T, dG, dA, dT and dC.
• Polymer includes biocompatible organic polymers, e.g., PEGs and polyhydroxyalkyl polymers.
• PEG means an ethylene glycol polymer that contains about 20 to about 2000000 linked monomers, typically about 50-1000 linked monomers, usually about 100-300.
• Polyethylene glycols include PEGs containing various numbers of linked monomers, e.g., PEG 20, PEG 30, PEG 40, PEG 60, PEG 80, PEG 100, PEG 115, PEG 200, PEG 300, PEG 400, PEG 500, PEG 600, PEG 1000, PEG 1500, PEG 2000, PEG 3350, PEG 4000, PEG 4600, PEG 5000, PEG 6000, PEG 8000, PEG 11000, PEG 12000, PEG 2000000 and any mixtures thereof.
• PEGs containing various numbers of linked monomers e.g., PEG 20, PEG 30, PEG 40, PEG 60, PEG 80, PEG 100, PEG 115, PEG 200, PEG 300, PEG 400, PEG 500, PEG 600, PEG 1000, PEG 1500, PEG 2000, PEG 3350, PEG 4000, PEG 4600, PEG 5000, PEG 6000, PEG 8000, PEG 11000, PEG 12000, PEG 2000
• Amino acid means an amino acid moiety that comprises any naturally-occurring or synthetic amino acid residue, i.e., any moiety comprising at least one carboxyl and at least one amino residue directly linked by one, two three or more carbon atoms, typically one ( ⁇ ) carbon atom.
• the nature and identity of the intervening structure located between the carboxyl and amino groups can have a variety of structures including those described herein.
• amino acids linked to the steroid through the amines group have sufficient conformation and length to be capable of autocatalytic hydrolysis of the amino acid-steroid bond and release of the steroid.
• the amino acids corresponding to the residue employed in the invention compounds are naturally occurring and have no significant pharmacological activity per se .
• optimal pharmacokinetic activity may be achieved by using non-naturally occurring amino acid residues.
• the intervening structure may be as simple as methylene when the amino acid residue is glycyl, or substituted methylene for other ⁇ amino acids.
• the structure ordinarily contains up to about 5 carbon or heteroatoms in the direct linkage between the amino acid's carboxyl carbon and the amine nitrogen.
• amino acids can comprise intervening ethylene, propylene, butylene, or pentylene groups or their substituted analogs, such as for example, oxyesters or ethers in which oxygen carbon and, as appropriate, hydrogen
• An example of such an intervening structure would be -CH-O-C(R 22 )(R 23 )- where R 22 and R 23 are independently selected hydrogen or organic moieties as described above for esters.
• one of R 22 and R 23 is hydrogen and the other is a C2-20 organic moiety
• the organic moieties contain about 1-20 carbon atoms and 0,1, 2, 3, 4 or 5 independently selected heteroatoms, which are typically selected from oxygen, nitrogen, sulfur and phosphorus.
• fewer intervening atoms are used when more rapid hydrolysis is desired, although larger structures are suitable if, e.g., they possess sufficient flexibility or have conformations to allow positioning of the carboxyl group in proximity to the amino acid-steroid bond.
• R 22 is -H, methyl or hydroxymethyl, usually -H
• R 23 is a side chain or group of a naturally occurring amino acid.
• Amino acid side chains include analogs where the side chain is a C 1-15 homolog of the corresponding natural compound, methylene, ethylene, propylene, butylene or a substituted derivative thereof, e.g., an alkyl, ether or alkoxy (e.g., methoxy, ethoxy, propoxy) substituted derivative.
• carboxyl-containing side chains if the C atom of the side chain carboxyl is linked by 5 or atoms to the N then the carboxyl optionally will be blocked, e.g.
• R 23 is generally a group such as -H, -CH 3 , -CH(CH 3 ) 2 , -CH 2 -CH(CH 3 ) 2 , -CHCH 3 -CH 2 -CH 3 , -CH 2 -C 6 H 5 , -CH 2 CH 2 -S-CH 3 , -CH 2 OH, -CH(OH)-CH 3 , -CH 2 -SH, -CH 2 -C 6 H 4 OH, -CH 2 -CO-NH 2 , -CH 2 -CH 2 -CO-NH 2 , -CH2-COOH, -CH 2 -CH 2 -COOH, -(CH 2 ) 4 -NH 2 and -(CH 2 ) 3 -NH-C(NH 2
• R 23 also includes 1-guanidinoprop-3-yl, benzyl, 4-hydroxybenzyl, imidazol-4-yl, indol-3-yl, methoxyphenyl and ethoxyphenyl.
• the optimal R 30 group is readily selected using routine assays.
• the amino acid residue has the structure shown in the formulas below.
• n is 1 or 2
• R 22 is -H and R 23 is a moiety containing one or more of the following groups: amino, carboxyl, amide, carboxyl ester, hydroxyl, C 6 -C 7 aryl, ether (-O-), thioether (-S-), n-, s- or t-alkyl (C 1 - C 6 ), guanidinyl, imidazolyl, indolyl, sulfhydryl, sulfoxide, and phosphoryl.
• the R 22 and R 23 substituents can have a wide variety of structures including those disposed herein, e.g., esters, ethers or carbonates.
• any of the D, L, meso, threo or erythro (as appropriate) racemates or mixtures thereof fall within the scope of this invention.
• D isomers should be used.
• L isomers may be more versatile since they can be susceptible to both non-enzymatic as well as potential targeted enzymatic hydrolysis, and are more efficiently transported by amino acid or dipeptidyl transport systems in the gastrointestinal tract.
• amino acid residues include the following: Glycyl; aminopolycarboxylic acids, e.g., aspartic acid, ⁇ -hydroxyaspartic acid, glutamic acid, ⁇ -hydroxyglutamic acid, ⁇ -methylaspartic acid, ⁇ -methylglutamic acid, ⁇ , ⁇ -dimethylaspartic acid, ⁇ -hydroxygtutamic acid, ⁇ , ⁇ -dihydroxyglutamic acid, ⁇ -phenylglutamic acid, ⁇ -methyleneglutamic acid, 3-aminoadipic acid, 2-aminopimelic acid, 2-aminosuberic acid and 2-aminosebacic acid residues; amino acid amides such as glutaminyl and asparaginyl; polyamino- or polybasic-monocarboxylic acids such as arginine, lysine, ⁇ -aminoalanine, ⁇ -aminobutyrine, ornithine, citruline, homoargin
• amino acids are suitably employed in this invention.
• amino acids are capable of autocatalytically hydrolyzing the amino acid-steroid bond.
• they typically contain, or upon being hydrolyzed in vivo , contain a free carboxyl group or amine group.
• hydrophobic amino acids such as mono-or di-alkyl or aryl amino acids, cycloalkylamino acids and the like.
• R 29 -R 34 R 31 -R 34 are defined below
• the residue can contribute to cell permeability by modulating the lipophilicity of a formula 1 or formula 2 compound.
• the residue does not contain a sulfhydryl or guanidino substituent.
• R 1 -R 4 can comprise a "peptide", i.e., two or more amino acids as defined above. Typically the amino acids are linked through normal peptide bonds, i.e., -CO-NH-, between adjacent amino acid residues.
• Peptides comprise dipeptides (dimers), tripeptides (trimers), short peptides of 4, 5, 6, 8, 10 or 15 residues, and longer peptides or proteins having about 100 or more residues.
• Invention compounds that comprise a peptide can be used as immunogens, prodrugs or as synthetic precursors for other steroid derivatives.
• the peptide will contain a peptidolytic enzyme cleavage site at the peptide bond linking the first residue and the next residue distal to the steroid residue.
• cleavage sites are optionally flanked by enzymatic recognition structures, e.g. particular residues recognized by a hydrolytic, enzyme, e.g., a peptidase located in the serum or in cells.
• Peptidolytic enzymes are well known, and in particular include carboxypeptidases.
• Carboxypeptidases digest polypeptides by removing C-terminal residues, and are specific in many instances for particular C-terminal sequences.
• Such enzymes and their substrate requirements in general are well known.
• a dipeptide having a given pair of residues and a free carboxyl terminus is covalently bonded through its ⁇ -amino group to the steroid nucleus. It is expected that the peptide will be cleaved by the appropriate dipeptidase, protease or by chemical hydrolysis, leaving the carboxyl of the proximal amino acid residue to autocatalytically cleave the amidate bond.
• Such dipeptides include species where both amino acids are in the L configuration, the D configuration or mixtures of configurations.
• Tripeptides i.e., 3 linked amino acid residues
• Tripeptides include those where A, C, D, E, F, G, H, I, K, L, M, N, P, Q, R, S, T, V, W or Y is linked by a standard peptide bond to the amino or the carboxyl terminus of any of the dipeptides listed above.
• the sequence -X1-pro-X2- (where X1 is any amino acid and X2 is hydrogen, any amino acid residue or a carboxyl ester of proline) will be cleaved by luminal carboxypeptidase to yield X1 with a free carboxyl, which in turn autocatalytically cleaves the amidate bond.
• X2 usually will be a benzyl ester of the carboxy group of X2.
• Other embodiments include tetrapeptides such as ones where any two of the dipeptides listed above, which may be the same or different dipeptides (e.g., AA and AA linked together or, e.g., AA and GI linked together), are linked to each other by a peptide bond through the amino terminus are carboxyl terminus.
• One, 2 or more tetrapeptides may bonded to the formula 1 or formula 2 compound through the tetrapeptide's amino or carboxyl terminus.
• the formula 1 or formula 2 compound comprises one or more amino acids or peptides having the structure (A), (B) or (C):
• R 29 is usually -H and R 30 may comprise - [C(R 34 ) 2 ] n2 N(R PR )- where n2 is 0,1, 2, 3, 4, 5 or 6, R PR is -H or a protecting group and each R 34 independently is -H, C 1 -C 20 optionally substituted alkyl, C 6-20 optionally substituted aryl, C 7 -C 20 optionally substituted alkylaryl, C 7 -C 20 optionally substituted arylalkyl, C 1 -C 20 optional substituted alkoxy, C 6 -C 20 optionally substituted aryloxy or hydroxyl.
• Such compounds will contain a plurality of steroid moieties.
• steroid moieties For example when both the epsilon ( ⁇ ) or delta ( ⁇ ) and alpha ( ⁇ ) amino groups of lysine or ornithine are substituted with steroid moieties the amidate is believed to be capable of releasing two molecules of active drug, each expected to emerge under different pharmacokinetics and therefore further sustaining the drug release.
• invention embodiments include salts and complexes of formula 1 compounds, including pharmaceutically acceptable or salts that are relatively non-toxic. Some of the compounds have one or more moieties that carry at least a partial positive or negative charge in aqueous solutions, typically at a pH of about 4-10, that can participate in forming a salt, a complex, a composition with partial salt and partial complex properties or other noncovalent interactions, all of which we refer to as a "salt(s)". Salts are usually biologically compatible or pharmaceutically acceptable or non-toxic, particularly for mammalian cells. Salts that are biologically toxic are optionally used with synthetic intermediates of invention compounds. When a watersoluble composition is desired, monovalent salts are usually preferred.
• Metal salts typically are prepared by reacting the metal hydroxide with a compound of this invention.
• metal salts which are optionally prepared in this way are salts containing Li + , Na + , and K + .
• a less soluble metal salt can be precipitated from the solution of a more soluble salt by adding a suitable metal compound invention salts may be formed from acid addition of certain organic acids, such as organic carboxylic acids, and inorganic acids, such as alkylsulfonic acids or hydrogen halide acids, to acidic or basic centers on invention compounds, such as basic centers on the invention pyrimidine base analogs
• Metal salts include ones containing Na + , Li + , K + , Ca ++ or Mg ++ .
• Other metal salts may contain aluminum, barium, strontium, cadmium, bismuth, arsenic or zinc ion.
• Salt(s) of compounds may comprise a combination of appropriate cations such as alkali and alkaline earth metal ions or ammonium and quaternary ammonium ions with the acid anion moiety of the phosphoric acid or phosphonic acid group, which may be present in invention polymers or monomers.
• Salts are produced by standard methods, including dissolving free base in an aqueous, aqueous-alcohol) or aqueous-organic solution containing the selected acid, optionally followed by evaporating the solution.
• the free base is reacted in an organic solution containing the acid, in which case the salt usually separates directly or one can concentrate the solution.
• Suitable amine salts include amines having sufficient basicity to form a stable salt, preferably amines of low toxicity including trialkyl amines (tripropylamine, triethylamine, trimethylamine), procaine, dibenzylamine, N-benzyl-betaphenethylamine, ephenamine, N,N'-dibenzylethylenediamine, N-ethylpiperidine, benzylamine and dicyclohexylamine.
• trialkyl amines tripropylamine, triethylamine, trimethylamine
• procaine dibenzylamine
• dibenzylamine N-benzyl-betaphenethylamine
• ephenamine N,N'-dibenzylethylenediamine
• N-ethylpiperidine benzylamine and dicyclohexylamine.
• Salts include organic sulfonic acid or organic carboxylic acid salts, made for example by addition of the acids to basic centers, typically amines,
• Exemplary sulfonic acids include C 6-16 aryl sulfonic acids, C 6-16 heteroaryl sulfonic acids and C 1-16 alkyl sulfonic acids such as phenyl sulfonic acid, a-naphthalene sulfonic acid, ⁇ -naphthalene sulfonic acid, ( S )-camphorsulfonic acid, methyl (CH 3 SO 3 H), ethyl (C 2 H 5 SO 3 H), n -propyl, i -propyl, n -butyl, s -butyl, i -butyl, t -butyl, pentyl and hexyl sulfonic acids.
• organic carboxylic acids include C 1-16 alkyl, C 6-16 aryl carboxylic acids and C 4-16 heteroaryl carboxylic acids such as acetic, glycolic, tactic, pyruvic, malonic, glutaric, tartaric, citric, fumaric, succinic, malic, maleic, oxalic, hydroxymaleic, benzoic, hydroxybenzoic, phenylacetic, cinnamic, salicylic, nicotinic and 2-phenoxybenzoic,
• salts include those made from inorganic acids, e.g., HF, HCl, HBr, Hi, H 2 SO 4 , H 3 PO 4 , Na 2 CO 3 , K 2 CO 3 , C 2 CO 3 , MgCO 3 and NaClO 3 , Suitable anions, which are optionally present with a cation such a Ca ++ , Mg ++ , Li + , Na + or K + , include formate, sorbate, glycodeoxycholate, cholate, deoxycholate, desoxycholate, taurocholate, taurodeoxycholate, taurolithocholate, tetraborate, nitrate, nitrite, sulfite, sulfamate, hyposulfite, bisulfite, metabisulfite, thiosulfate, silicate, metasilicate, gluconate, gulcuronate, hippurate, hydrosulfite, borate, metaborate and urate
• Salts also include the invention compound salts with one or more amino acids.
• Many amino acids are suitable, especially the naturally-occurring amino acids found as protein components, although the amino acid typically is one bearing a side chain with a basic or acidic group, e.g., lysine, arginine, histidine or glutamic acid, or a neutral group such as glycine, serine, threonine, alanine, isoleucine, or leucine.
• compositions include compounds in their un-ionized, as well as zwitterionic form, and combinations with stoiochimetric amounts of water as in hydrates.
• the formula 1 compounds include enriched or resolved optical isomers at any or all asymmetric atoms as are apparent from the depictions. Both racemic and diasteromeric mixtures, as well as the individual optical isomers can be isolated or synthesized so as to be substantially free of their enantiomeric or diastereomeric partners, and these are all within the scope of the invention. Chiral centers may be found in invention compounds at, for example, R 1 , R 2 , R 3 , R 4 , R 5 or R 6 .
• One or more of the following methods are used to prepare the enantiomerically enriched or pure isomers herein.
• the methods are listed in approximately their order of preference, i.e., one ordinary should employ stereospecific synthesis from chiral precursors before chromatographic resolution or before before spontaneous crystallization.
• Stereospecific synthesis is conveniently used when the appropriate Chiral starting material is available and reaction are chosen that do not result in undesired racemization at chiral sites.
• One advantage of stereospecific synthesis is that it does not product undesired enantiomers that must be removed from the final product, thereby lowering overall synthetic yield.
• those skilled in the art would understand what starting materials and reaction conditions should be used to obtain the desired enantiomerically enriched or pure isomers by stereospecific synthesis.
• Another method entails converting the enantiomers in the mixture to diasteriomers with chiral auxiliaries and then separating the conjugates by ordinary column chromatography.
• This is a very suitable method, particularly when the embodiment contains free carboxyl, amino or hydroxyl that will form a salt or covalent bond to a chiral auxiliary, Chirally pure amino acids, organic acids or organosulfonic acids are all worthwhile exploring as chiral auxiliaries, all of which are well known in the art. Salts with such auxiliaries can be formed, or they can be covalently (but reversibly) bonded to the functional group.
• pure D or L amino acids can be used to amidate the carboxyl group of invention embodiments that comprise a carboxyl group and then separated by chromatography.
• Enzymatic revolution is another method of potential value.
• one prepare covalent derivatives of the enantiomers in the racemic mixture, generally lower alkyl esters (for example of carboxyl), and then the derivative to enzymatic cleavage, generally hydrolysis.
• an enzyme must be chosen that is capable of stereospecific cleavage, so it is frequently necessary to routinely screen several enzyme. If esters are to be cleaved, then one selects a group of phosphatases, and lipases and determines their activity on the derivative.
• Typical esterases are from liver, pancreas or other animal organs, and include porcine liver esterase.
• the enatiomeric mixture separates from solution or a melt as a conglomerate, i.e., a mixture of enantiomerically-pure crystals, then the crystals can be mechanically separated, thereby producing the enantiomerically enriched preparation.
• This method is not practical for large preparations and is of limited value for true racemic compounds.
• Asymmetric synthesis is another technique for achieving enantiomeric enrichment. For example, a chiral protecting group is reacted with the group to be protected and the reaction mixture allowed to equilibrate. If the reaction is enantiomerically specific then the product will be enriched in that enantiomer.
• the formula 1 and 2 compounds are useful to treat conditions that are associated with or that respond to modulation of AR activity, including prostate cancer, acne, male pattern baldness, hirsutism, hypogonadism and breast cancer.
• These compounds may be optionally be used in combination therapies to treat any of these diseases or conditions.
• the combinations include a formula 1 or 2 compound(s) combined with surgery, radiation therapy, cytotoxic agents, cytostatic agents or hormone therapies, including any of the therapies or treatments disclosed herein or in any of the references cited herein.
• the formula 1 or 2 compounds are also useful to determine if the AR or another steroid receptor, e.g., an orphan receptor, are present in a cell population or cell extract.
• the compounds will typically be labeled, e.g., radiolabels ( 14 C, 3 H, 32 P, 35 S or a radioactive iodine isotope)or labeled with a crosslinking moiety.
• the compounds are useful as reference standards to compare their capacity to modulate AR activity with the capacity of known AR modulators, such as AED.
• a formula 1 or 2 compound is used in a suitable assay system, e.g., one that comprises cells ( in vitro or in vivo ) that contain functional AR, an AR-responsive gene, e.g., ornithine carboxylase, that can be conveniently assayed, a formula 1 or 2 compound and a test compound.
• a suitable assay system e.g., one that comprises cells ( in vitro or in vivo ) that contain functional AR, an AR-responsive gene, e.g., ornithine carboxylase, that can be conveniently assayed, a formula 1 or 2 compound and a test compound.
• the effect of the formula 1 or 2 compound on the capacity of the test compound to modulate the AR is examined, usually using a suitable controlled system, e.g., with varying concentrations of the formula 1 or 2 compound, or varying concentration of the test compound.
• Assay systems, or components thereof that comprise the Ar have been described, see, e.g., U.S.
• an effective dose of a formula 1 or formula 2 compound, or the "active ingredient", for use in therapeutic applications, e.g., prostate cancer treatment will depend to a certain extent at least on factors such as the status of the condition being treated, whether the compound(s) is being used prophylactically (lower doses) or the severity of the malignancy, the method of delivery, and the pharmaceutical formulation. These factors will be determined by the clinician using conventional dose escalation studies.
• the dose administered to the subject will be from about 0.03 to about 30 mg/kg body weight per day, generally about 0.1 to about 10 mg/kg body weight per day.
• the daily candidate dose for an adult human of approximately 70 kg body weight will range from about 1 mg to about 750 mg, generally between about 5 mg and about 300 mg, usually between about 30 mg and about 250 mg.
• a daily dose may take the form of single or multiple doses or administration sites.
• the dose will generally be lower (e.g., about 0.02 to about 6 mg/kg) than a dose administered orally.
• compositions that comprise a formula 1 or 2 compound will typically comprise one or more carriers or excipients and optionally other therapeutic ingredients.
• the carrier(s) will generally be "acceptable” in the sense of being compatible with the other ingredients of the formulation and physiologically innocuous to the recipient thereof.
• Such carriers or excipients are known, e.g., fillers, lubricants, binders and various liquid excipients for liquid formulations. Suitable carriers include those disclosed in the references cited herein.
• Suitable formulations include aqueous or oily solutions of the active ingredient.
• Formulations suitable for parenteral delivery of the active ingredient include aqueous and non-aqueous compositions where the active ingredient is dissolved or suspended in solution, Such formulations will typically comprise about 25-300 mg/mL of the active ingredient, usually about 40-200 mg/mL.
• Formulations suitable for parenteral administration include aqueous and non-aqueous sterile injection solutions which may contain anti-oxidants, buffers, bacteriostats or solutes that render the formulation isotonic with the blood of the intended recipient.
• Other parenteral formulations may comprise aqueous and non-aqueous sterile suspensions which may include suspending agents and thickening agents.
• Formulations suitable for topical administration include creams or ointments wherein the formula 1 or 2 compound is dissolved or suspended in a suitable carrier, especially a non-aqueous solvent or carrier for the active ingredient.
• the active ingredient is typically present in such formulations in a concentration of 0.5 to 20% w/w, often 0.5 to 10% w/w.
• Such formulations are suitable for use in applications such as treating male pattern baldness or acne.
• Formulations suitable for buccal or sublingual administration include lozenges comprising the active ingredient, which is optionally present in a flavored basis such as sucrose and acacia or tragacanth.
• Pastilles may comprise the active ingredient in an inert basis such as gelatin and glycerin, or sucrose and acacia, and mouthwashes may comprise the active ingredient in a suitable liquid carrier.
• Formulations for rectal administration may be presented as a suppository with a suitable base comprising for example cocoa butter or a salicylate.
• Formulations suitable for intrapulmonary or nasal administration will have a particle size for example in the range of 0.01 to 200 microns (including particle sizes in a range between 0.01 and 500 microns in increments of 0.1 microns such as 0.1, 0.2, 0.3, 0.4, 0.5, 1, 2, 5, 30 microns, 35 microns, etc.), which is administered by inhalation through the nasal passage or by inhalation through the mouth so as to reach the various bronchi or alveolar sacs.
• Formulations suitable for aerosol or dry powder administration may be prepared according to conventional methods and may be delivered with other therapeutic agents such as compounds heretofore used in the treatment or prophylaxis of prostate cancer.
• Formulations suitable for vaginal administration may be presented as pessaries, tampons, creams, gels, pastes, foams or spray formulations containing in addition to the active ingredient such carriers as are known in the art to be appropriate.
• Formulations comprising an active ingredient are presented in unit-dose or multi-dose containers, for example sealed ampoules and vials, and may be stored in a freeze-dried (lyophilized) condition requiring only the addition of the sterile liquid carrier, for example water for injection, immediately prior to use.
• sterile liquid carrier for example water for injection
• Extemporaneous injection solutions and suspensions are prepared from sterile powders, granules and tablets of the kind previously described.
• Preferred unit dosage formulations are those containing a daily dose or unit daily sub-dose, as described herein, or an appropriate fraction thereof, of the active ingredient.
• formulations of this invention may include other agents conventional is the art having regard to the type of formulation in question, for example those suitable for oral administration may include flavoring or coloring agents.
• the invention further provides veterinary compositions comprising at least one active ingredient together with a veterinary carrier therefor.
• Veterinary carriers are materials useful for the purpose of administering the composition and may be solid, liquid or gaseous materials which are otherwise inert or acceptable in the veterinary art and are compatible with the active ingredient. These veterinary compositions may be administered orally, parenterally or by any other desired route.
• the active ingredeints may be used to provide controlled release pharmaceutical formulations containing an active ingredient ("controlled release formulations") in which the release of the active ingredient is controlled and regulated to allow less frequency dosing or to improve the pharmacokinetic or toxicity profile of a given active ingredient.
• the formulations include those suitable for any of the foregoing administration routes.
• the formulation may conveniently be presented in unit dosage form and may be prepared by any of the methods well known in the art of pharmacy. Techniques and formulations generally are found in Remington's Pharmaceutical Sciences (Mack Publishing Co., Easton, Pa .). Such methods include the step of bringing into association the active ingredient with the carrier which constitutes one or more accessory ingredients or excipients.
• the formulations are prepared by uniformly and intimately bringing into association the active ingredient with liquid carriers or finely divided solid carriers or both, and then, if necessary, shaping the product.
• Formulations of the invention suitable for oral administration are prepared as discrete units such as capsules, cachets or tablets each containing a predetermined amount of the active ingredient; as a powder or granules; as solution or a suspension in an aqueous liquid or a non-aqueous liquid; or as an oil-in-water liquid emulsion or a water-in-oil liquid emulsion.
• the active ingredient may also be presented as a bolus, electuary or paste.
• a tablet is made by compression or molding, optionally with one or more accessory ingredients.
• Compressed tablets may be prepared by compressing in a suitable machine the active ingredient in a free-flowing form such as a powder or granules, optionally mixed with a binder, lubricant, inert diluent, preservative, surface active or dispersing agent.
• Molded tablets may be made by molding in a suitable machine a mixture of the powdered active ingredient moistened with an inert liquid diluent.
• the tablets may optionally be coated or scored and optionally are formulated so as to provide slow or controlled release of the active ingredient therefrom.
• the aqueous phase of a cream base may include, for example, polyhydric alcohol, i.e. an alcohol having two or more hydroxyl groups such as propylene glycol, butane 1,3-diol, mannitol, sorbitol, glycerol and polyethylene glycol and mixtures thereof.
• the topical formulations may desirably include a compound which enhances absorption or penetration of the active ingredient through the skin or other affected areas. Examples of such dermal penetration enhancers include dimethyl sulphoxide and related analogs.
• the oily phase of the emulsions of this invention may be constituted from known ingredients in a known manner. While the phase may comprise merely an emulsifier (otherwise known as an emulgent), it desirably comprises a mixture of at least one emulsifier with a fat or an oil or with both a fat and an oil. Preferably, a hydrophilic emulsifier is included together with a lipophilic emulsifier which acts as a stabilizer. It is also preferred to include both an oil and a fat.
• the emulsifier(s) with or without stabilizer(s) make up the so-called emulsifying wax
• the wax together with the oil and fat make up the so-called emulsifying ointment which forms the oily dispersed phase of the cream formulations.
• Emulgents and emulsion stabilizers suitable for use in the formulation of the invention include Tween.RTM. 60, Span.RTM. 80, cetostearyl alcohol, benzyl alcohol, myristyl alcohol, glyceryl mono-stearate and sodium lauryl sulfate.
• the choice of suitable oils or fats for the formulation is based on achieving the desired cosmetic properties.
• the cream should preferably be a non-greasy, non-staining and washable product with suitable consistency to avoid from tubes or other containers.
• Straight or branched chain, mono- or dibasic alkyl esters such as di-isoadipate, isocetyl stearate, propylene glycol diester of coconut fatty acids, isopropyl myristate, decyl oleate, isopropyl palmitate, butyl stearate, 2-ethylhexyl palmitate or as blend of branched chain esters known as Crodamol CAP may be used, the last three being preferred esters. These may be used alone or in combination depending on the properties required. Alternatively, high melting point lipids such as white soft paraffin and/or liquid paraffin or other mineral oils are used.
• the methods or compositions described herein will utilize, in lieu of a formula 1 or 2 compound, one or more steroid or non-steroid compounds that are disclosed in U.S. patent 2833793 , 2911418 , 3148198 , 3471480 , 3710795 , 3711606 3976691 , 4268441 , 4427649 , 4542129 , 4666898 , 4693999 , 4978532 , 5001119 , 5043165 , 5077284 , 5028631 , 5110810 , 5157031 , 5162198 , 5175154 , 5277907 , 5292730 , 5296481 , 5372996 , 5387583 , 5407684 , 5424463 , 5461042 , 5478566 , 5506223 , 5518725 , 5527788 , 5527789 , 5532230 , 5559107 , 5562910 , 5583126
• the A ring may comprise 0, 1, 2 or 3 double bonds and that ring may thus be aromatic.
• the B and D rings may independently comprise 0, 1 or 2 double bonds and the C ring may comprise 1 double bond.
• R 24 and R 25 are present, they independently are in the ⁇ - or ⁇ -configurations, and in some embodiments, they are independently -CH 3 or -CH 2 OH in the ⁇ -configuration.
• R 26 -R 28 independently comprise -H, -OR PR , -SR PR , -N(R PR ) 2 , -O-Si-(R A ) 3 , - CN, -NO 2 , an ester, a phosphoester, a phosphonoester, a sulfite ester, a sulfate ester, an amide, an amino acid, a peptide, an ether, a thioether, an acyl group, a carbonate, a carbamate, a carboxyl, a halogen, an optionally substituted alkyl group, an optionally substituted alkenyl group, an optionally substituted alkynyl group, an optionally substituted aryl moiety, an optionally substituted heteroaryl moiety, an optionally substituted monosaccharide, an optionally substituted oligosaccharide, a nucleoside, a nucleoside, a nucleoside
• Group1 compounds Compounds or genera of compounds are named in Table 2. Each named group 1 compound or genus is a compound or genus of formula 3 wherein R 7 , R 8 , R 14 and R 15 are all -H, and R 24 and R 25 are both -CH 3 .
• the Table 2 compounds are named by numbers that specify the structures of the R 5 , R 6 , R 12 , R 13 , R 16 , R 17 , R 18 and R 19 variable groups in Table 1 as follows R 5 R 6 .R 12 R 13 .R 16 R 17 .R 18 R 19 .
• Additional exemplary formula 1 compound groups include compounds or genera of compounds named in the groups disclosed below. The configurations of all hydrogen atoms for the following groups are as defined for the group 1 compounds above.
• Group 2 compounds These compounds are named as defined for group 1 compounds, except that R 14 in formula 3 is -OH and R 15 is -H.
• R 14 in formula 3 is -OH
• R 15 is -H.
• the group 2 compound named 4.2.2.3 has the structure
• Group 3 compounds These compounds are named as defined for group 1 compounds, except that R 14 in formula 3 is -H and R 15 is -OH.
• R 14 in formula 3 is -H and R 15 is -OH.
• the group 3 compound named 4.2.2.3 has the structure
• Group 4 compounds These compounds are named as defined for group 1 compounds, except that R 14 and in formula 3 are both -OH.
• the group 4 compound named 4.2.2.3 has the structure
• the group 5 compound named 4.2.2.3 has the structure
• Group_6 compounds These compounds are named as defined for group 1 compounds, except that R 24 in formula 3 is -H, -CH 2 OH, -CH 2 OC(O)CH 3 , -OC(O)CH 3 or -CH 2 OC(O)OCH 3 .
• R 24 in formula 3 is -H, -CH 2 OH, - CH 2 OC(O)CH 3 , -OC(O)CH 3 or -CH 2 OC(O)OCH 3 .
• Group 7 compouds . These compounds are named as defined for group 1 compounds, except that R 25 in formula 3 is -H, -CH 2 OH, -CH 2 OC(O)CH 3 , -OC(O)CH 3 or -CH 2 OC(O)OCH 3 .
• R 25 in formula 3 is -H, -CH 2 OH, - CH 2 OC(O)CH 3 , -OC(O)CH 3 or -CH 2 OC(O)OCH 3 .
• Group 8 compounds These compounds are named as defined for group 1 compounds, except that the double bond at the 5-6 position is absent, R 9 , R 10 and R 11 (as defined for formula 1) are present and are all hydrogen, and R 9 is in the ⁇ -configuration.
• the group 8 compound named 4.2.2.3 has the structure
• Group 9 compounds These compounds are named as defined for group 1 compounds, except that the double bond at the 5-6 position is absent, R 9 , R 10 and R 11 (as defined for formula 1) are present and are all hydrogen, and R 9 is in the ⁇ -configuration.
• R 9 , R 10 and R 11 as defined for formula 1
• R 9 is in the ⁇ -configuration.
• the group 9 compound named 4.2.2.3 has the structure
• Group 10 compounds These compounds are named as defined for group 1 compounds, except that R 14 is -O-C(O)-CH 2 NH 2 , -O-C(O)-O-CH 3 , -O-C(O)-CH 3 or-SH.
• the group 10 compound named 4.2.2.3 has the structure where R 14 is -O-C(O)-CH 2 NH 2 , -O-C(O)-O-CH 3 , -O-C(O)-CH 3 or -SH.
• Group 11 compounds These compounds are named as defined for group 1 compounds, except that R 15 is -OH, -O-C(O)-O-CH 3 , -O-C(O)-CH 3 or -SH.
• the group 11 compound named 4.2.2.3 has the structure where R 15 is -O-C(O)-CH 2 NH 2 , -O-C(O)-O-CH 3 , -O-C(O)CH 3 or -SH.
• Group 12 compounds comprises 11 subgroups of compounds, subgroups 12-1 through group 12-11. These compounds are named as defined for any compound or genus in any of group 1 through group 11 compounds, except that the R 5 and R 6 structures in Table 1 have the following structures. 1 -Cl, -H; 2 -H, -Cl; 3 -H. -Br; 4 -Br.
• Group 13 compounds comprises 11 subgroups of compounds, subgroups 13-1 through group 13-11. These compounds are named as defined for any compound or genus in any of group 1 through group 11 compounds, except that the R 5 and R 6 structures in Table 1 have the following structures. 1 -H, -H; 2 -H, - CCH 3 ; 3 -CCH 3 , -H; 4 -OH, -CCH 3 ; -CCH 3 , -OH; 6 -H, -CH 3 ; 7 -CH 3 , -H; 8 -CH 3 , - CH 3 ; 9 -C 2 H 5 , -C 2 H 5; 10 -C 2 H 5, -H.
• the group 13-1 and 13-2 compounds named 4.2.2.3 have the structure
• formula 1 and 2 compounds include compounds having the formulas 3 and 4 wherein, R 1 -R 27 are independently chosen and have the definitions given herein.
• Exemplary formula 3 and 4 compounds have 0, 1, 2 or 3 double bonds and a non-hydrogen substituent at 2, 3, 4 or more of R 1 , R 3 , R 5 , R 11 , R 13 , R 17 , R 19 , R 24 and R 25 . When three double bonds are present in the A ring, then R 25 is absent.
• Such embodiments include each of the compounds groups described above wherein the A ring is aromatic and in such compounds, only one variable group is present at each carbon atom in the A ring, and the R 1 , R 3 , R 5 and R 7 variable groups are as defined in the compound groups gioven above.
• the formula 3 compound shown in compound group 1 comprises (1) a double bond at the 16-17 position and only R 17 and R 18 are present at 16 and 17, (2) a double bond at the 16-17 position and only R 16 and R 18 are present at 16 and 17, (3) a double bond at the 16-17 position and only R 17 and R 19 are present at 16 and 17, (4) a double bond at the 16-17 position and only R 16 and R 19 are present at 16 and 17, (5) a double bond at the 5-6 and 1-17 positions and only R 17 and R 18 are present at 16 and 17, (6) a double bond at the 5-6 and 16-17 positions and only R 16 and R 18 are present at 16 and 17, (7) a double bond at the 5-6 and 16-17 positions 5-6 and 16-17 positions and only R 17 and R 19 are present at 16 and 17, (8) a double bond at the 5-6 and 16-17 positions and only R 16 and R 19 are present at 16 and 17, (9) a double bond at the 4-5 and 16-17 positions and only R 17 and R 18 are present at 16 and 17, (10) a double bond at
• variable groups at the 1 2, 4, 6, 11 and 12 positions may comprise one, two or three moieties other than hydrogen, e.g., optionally substituted alkyl, optionally substituted alkoxy, optionally substituted alkylaryl, an ester, an ether, as thioether, a thioesters, an optionally substituted heterocycle, or an optionally substituted monosaccharide, white the remainder of the variable groups at the 1, 2, 4, 6, 11 and 12 positions are hydrogen.
• R 1 -R 28 when one or more of R 1 -R 28 is a protected moiety, e.g., -OR PR , -SR PR , -N(R PR )2, the R PR protecting group, together with the atom to which it is linked, comprises an ester, a thioester, a phosphoester, a phosphonoester, a sulfite ester, a sulfate ester, an amide, an amino acid, a peptide, an ether, a thioether, an acyl group, a carbonate, a carbamate, a slufonamide, an optionally substituted alkyl group, an optionally substituted alkenyl group, an optionally substituted alkynyl group, an optionally substituted aryl moiety, an optionally substituted heteroaryl moiety, an optionally substituted monosaccharide, an optionally substituted oligosaccharide, a nucleoside
• variable groups are in the ⁇ , ⁇ or ⁇ configuration, unless otherwise specified.
• Esters and thioesters at one, two or more variable groups may comprise a saturated or unstaurated, normal or branched fatty acid, typically comprising about 4 to about 20 carbon atoms.
• Such fatty acids, if unsaturated may comprise one, two or more double bonds or one or two triple bonds.
• the double bond in the fatty acids can be in the cis, trans or cis and trans configurations and they are optionally substituted with one, two or more substituents as described for esters, e.g., with -O-, -OH, -S- or -SH.
• Scheme 3 The allylic bromination at C-7 is accomplished essentially as shown in Scheme 1.
• R and R A are as defined in Schemes 1 and 2.
• Scheme 7 Formula 7 compounds are prepared from the 3-acetate with reagents described in Schemes 1 and 4.
• R and R A are as defined in Schemes 1 and 2.
• esters of formula 1 - 10c compounds, such as -O-C(O)-R B where R B is a C 1-50 organic moiety, are prepared from the steroid alcohol by treatment, with the appropriate acid anhydride or acid chloride (R B -C(O)-Cl) to form any desired ester.
• Ethers such as O-R B , are prepared from alcohols by formation of the alkaline metal alkoxide (Na + or K + ) followed by treatment with a primary or secondary iodide (R B -I).
• Thionoesters, R B -C(S)-O- are prepared by treating the R B -C(O)-O- ester with Lawesson's reagent.
• Sulfates NaO-S(O)(O)-O-, R B -O-S(O)(O)-O-, e.g., CH 3 (CH 2 ) 0-18 -S(O)(O)-O-, are prepared by treatment of alcohols with chlorosulfonic acid followed by NaOH or alternativety by oxidation of sulfites using KMnO 4 . If the alkyl (e.g., methyl) ester is desired alkylchloro-sulfonate (methylchloro-sulfonate) can be used.
• alkyl (e.g., methyl) ester is desired alkylchloro-sulfonate (methylchloro-sulfonate) can be used.
• Sulfites HO-S(O)-O- and ammonium salts NH 4 O-S(O)-O, or R B O-S(O)-O- esters (e.g., CH 3 O-S(O)-O-) are prepared by standard methods.
• the ammonium salts are prepared by treatment of alcohols with ammonia and sulfur dioxide.
• esters such as alkyl, alkenyl and alkynyl esters (e.g., methyl ester) are obtained when alcohols are treated with alkylchlorosulfite (e.g., methycholorosulfite), alkenylchlorosulfite or alkynylchlorosulfite in the presence of a suitable base such as triethylamine.
• alkylchlorosulfite e.g., methycholorosulfite
• alkenylchlorosulfite or alkynylchlorosulfite in the presence of a suitable base such as triethylamine.
• Phosphoesters, R B O-P(OR PR )(O)-O- are prepared by treating the alcohol with diethylchlorophosphate in the presence of Na 2 CO 3 .
• R B O-P(SR PR )(O)-O- are generated by treatment of alcohols with the monothio analog of diethylchlorophosphate as described for phosphoesters yielding the phosphothioesters.
• Carbonates, R B O-C(O)-O- are generated from the corresponding steroid alcohol using the chloroformate (R B -C(O)-Cl), e.g., C 1-20 alkyl, alkenyl or alkynyl chloroformates (e.g. CH 3 (CH 2 ) 0-5 -C(O)Cl).
• Aminoacid esters, ZNX-CHY-C(O)-O- are generated by coupling the steroid alcohol with the acid chloride of the N-protected amino acid,
• Oxidation of hydroxyl groups that are linked to the steroid nucleus is used to obtain ketones and related functionalities.
• conversion of alcohols to ketones can be achieved using a variety of oxidizing agents such as CrO 3 in AcOH, or pyridinium cholorchromate, pyridinium dichrornate or oxalyl chloride with triethylamine (Swern oxidation).
• Lawesson's reagent 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2
• thiols are prepared from alcohols by conversion of the alcohol with inversion to the bromide using PBr 3 .
• Treatment of the bromide with thiourea followed by NaOH gives the thiol.
• Thioethers, R B -S- are prepared from thiols by treatment with NaOH and the required halide, e.g., alkyl halide.
• alcohol derivatives like tosylates or mesylates can be displaced by thiolate anions, R B -S - , to yield the thioether.
• Thioesters, R-C(O)-S- are prepared by treating the tosylate (mesylate) of the alcohol with the sodium salt of the thioacid.
• Substitution of hydroxyl groups can be used to generate both esters, R B O-C(O)-, and amides, NHR B -C(O)-, linked to the steroid at carbon atoms.
• R B is -H, a protecting group or a C 1-50 organic moiety. These are synthesized from the steroid bromide with inversion by displacement with NaCN. The cyanide group can be hydrolyzed to the amides or the acid.
• the acid is esterified or treated by standard peptide coupling reactions with an O-protected amino acid in the presence of a suitable carboxyl activating agents such as dicyclohexylcarbodiimide (DCC) to form steroid -C(O)-NH-CHY-C(O)-OR, where Y is the side chain of an amino acid or a C1-C10 organic moiety and R is a protecting group (or hydrogen when deprotected).
• DCC dicyclohexylcarbodiimide
• Amines and derivatives of amines are typically prepared by standard methods.
• amines e.g., NH 2 -steroid
• amines are generally prepared using the Hoffmann rearrangement (Br 2 , NaOH) from the amide (NH 2 -C(O)-steroid) or the Curtius rearrangement (NaN 3 ) from the acid chloride of the steroid.
• the R B substituent can subsequently be introduced by alkylation.
• Steroid alcohols can be used as starting materials under standard Mitsunobu conditions (PPh 3 , DEAD) to yield N-Boc sulfonamides using N-(t-butoxycarbonyl)-p-toluenesulfonamide.
• One can selectively remove either protecting group.
• Treatment with trifluoroacetic acid afford the sulfonamide (R B C(O)(O)-NH-steroid).
• sodium napthalenide deprotects to give the N-Boc compound.
• Amines (NH 2 -steroid) can be converted to amides (R B NH-C(O)-steroid) using acyl chlorides (R B -C(O)-Cl).
• N-carbarnate R B O-C(O)-NH-steroid
• the amine (NH 2 -steroid) can be alkylated with an ⁇ -bromoester (R B -C(O)-CHY-NH 2 ) to yield the amio acid substituted steroid (R B -O-C(O)-CHY-NH-steroid).
• the desired intermediate is optionally separated from other products or at least partially enriched (e.g., enriched at least about 10-fold, usually at least about 50-100-fold) from ether products before subsequent reactions are conducted.
• Substitution at steroid carbon atoms will generally proceed with greatest efficiency at the 3-position, which is relatively sterically unhindered and C-17 is generally somewhat accessible than the C-3 position.
• the relative reactivities of the C-3, C-7, C-17 and C-16 positions allows one to use their reactivities to control the sequential introduction of different functional groups into the same steroid molecule.
• groups, such as hydroxyl at more reactive positions, C-3 or C-17 may be sequentially protected or deprotected to allow introduction of functional groups at other positions, such as C-7 or C-16.
• Polymer such as PEG are linked to the compounds essentially as described above.
• PEG 200 or PEG 300 is linked to the steroid at the 3, 7, 16, 17 or other positions by an ether linkage (PEG-O-steroid) using a PEG alkoxide (PEG-ONa), to displace the steroid bromide.
• PEG-ONa PEG alkoxide
• PEG-Br can be treated with the steroid alkoxide.
• Polyethylene glycol esters such as those described in U.S. patent 5681964 can also be prepared using a suitable formula 1 compound and the methods described herein.
• Monosaccharides or polysaccharides and oligonucleotides are linked to steroid hydroxyl groups using known methods, see e.g., U.S. patent 5627270 .
• Organic moieties are introduced into the 1 position using a corresponding reagent, e.g., (R 35 ) 2 CuLi, where R 35 is a C1-C25 organic moiety that may comprise 1, 2, 3, 4 or more substituents, e.g., -O-, -S-, -NH-, -OR PR , protected ketone (e.g., ethylene ketal), SR PR or -N(R PR ) 2 .
• R 35 is R 1 ,
• R 35 is methyl
• a methyl group is introduced into the 1 position, or when R 35 is -CH 2 -OR PR the -CH 2 -OR PR group is introduced into the 1 position.
• Compound 12 is converted to the 17 hydroxyl derivative 13 by hydrolysis using standard methods, e.g., treatment with sodium carbonate in methanol.
• the compound 15 is converted to the 17-hydroxy derivative by reduction of the ketone, e.g., using LiBH 4 or NaBH 4 in Ethanol or by catalytic hydrogenation with H 2 /Ni, H 2 /Pt or H 2 /Pd. Catalytic hydrogenation will also result in reduction of the double bond in 12, 1 3, 14 or 15 .
• a hydroxyl at both the 3 and 17 positions is obtained by reducing the ketone in compound 12 and removing the acetate group or by directly reducing the 3 ketone in compound 13 .
• Formula 1 or 2 compounds that contain a hydroxyl or ether that is linked to the 1 position are prepared essentially as follows.
• a hydroxyl is introduced into the 1 position by oxidation of a suitable starting material using alkaline hydrogen peroxide to obtain the epoxide 16 .
• the compound 16 is converted to the 1-hydroxyl derivative by treatment, e.g., with excess lithium metal and excess ammonium chloride in NH 4 -THF (1:1) at reflux to give 17 .
• the ketal group is hydrolyzed to give the 17 ketone.
• the hydroxyl group at 1 is optionally further converted to other moieties essentially as described above.
• Formula 1 or 2 compounds that contain an an organic moiety that is linked to the 2 position are prepared essentially as follows. Organic moieties are introduced into the 2 position using a corresponding reagent, e.g., (R 35 ) 2 CuLi, where R 36 is a C1-C25 organic moiety that may comprise 1, 2, 3, 4 or more substituents, e,g., -O-, -S-, -NH-, -OR PR , protected ketone (e.g., ethylene ketal), -SR PR or -N(R PR ) 2 . In other embodiments, R 36 is R 3 .
• R 36 when R 36 is methyl, a methyl group is introduced into the 2 position, or when R 36 is -CH 2 -OR PR , the -CH 2 -OR PR group is introduced into the 2 position.
• the starting material 18 is testosterone when R 24 and R 25 are both methyl.
• the compound 18 is alkylated using an alkylating agent such as the iodide R 36 I in the presence of a strong such as lithium diisopropylamide ("LDA"), n -butyllithium sodium t- pentoxide or (C 2 H 5 ) 2 Ni to give R 36 bonded to the steroid in the ⁇ and ⁇ configurations.
• LDA lithium diisopropylamide
• n -butyllithium sodium t- pentoxide C 2 H 5 ) 2 Ni
• the 2 ⁇ -R 36 group is epimerized to the 2 ⁇ configuration using a strong base, e.g., a sodium alkoxide such as sodium methoxide in an alcohol such as methanol.
• a strong base e.g., a sodium alkoxide such as sodium methoxide in an alcohol such as methanol.
• the two epimers are at least substantially separated by routine methods.
• Example 1 AR activity assay .
• One biological function of the AR is to act as a transcription factor, which can modulate transcription of target genes.
• AED 5 ⁇ -dihydrotestosterone (DHT), 17 ⁇ -estradiol (E2), and progesterone were purchased from Sigma.
• Ethynyl derivatized steroids were purchased from Steraloids.
• the plasmid pSG5-wild-type AR (pSG5) and mouse mammalian tumor virus (MMTV) -chloramphenicol acetyltransferase (CAT) were constructed as described (6).
• steroid compounds were synthesized using routine protocols and others have been described (19, 20).
• the human prostate cancer cell line, PC-3, and human breast cancer cell line, MCF-7 were maintained in Dulbecco's modified eagles medium (DMEM) containing 10% fetal calf serum.
• DMEM Dulbecco's modified eagles medium
• Transfection efficiency was normalized by cotransfection with a ⁇ -galactosidase vector, which acted as an internal control.
• the CAT enzyme activity was quantitated by phosphor imager according to the manufacturer's instructions (Molecular Dynamics).
• Example 2 Induction of AR-mediated transcriptional activity.
• Steroid compounds were screened for their ability to induce AR transcriptional activity in the AR-negative PC-3 cell line.
• the results of the CAT assay were obtained by transient co-transfection of AR plasmid and a reporter plasmid (MMTVCAT) containing the CAT gene linked to the androgen response element (ARE). After transfection, the cells were treated with various DHEA derivatives at 1000, 10, and 0. 1 nM. As shown in figure 1, compounds 0, 4, 5, 6, 8, 10, 13, 15, 16, 18, and 22 had little androgenic activity but they did induce a low level of AR-mediated CAT gene transactivation.
• AED (compound 21) had about the same capacity as DHT to stimulate AR-mediated CAT gene transcription.
• Example 3 of anti-adiol activity of with low androgenic effects.
• Several compounds were screened for their capacity to modulate AED's effects on AR-mediated activation of gene transcription in PC-3 cells.
• the chemical structures of compounds 4, 6, 8 and 10 are shown in figure 2A.
• the PC-3 cells were co-transfected with pSG5 and the MMTV-CAT reporter vector in the presence of 50 nM AED and each compound at a concentration of 10, 100, or 1000 nM.
• compounds 4, 6, 8 and 10 antagonized AED-mediated AR transcriptional activity.
• concentrations of 0.1 ⁇ M and 1 ⁇ M compounds 4 and 6 suppressed the AED-induced AR transactivation to less than 30%.
• Compounds 0, 5, 13, 15, 18 and 22 show either activation of AED-mediated AR transcriptional activity or they have no effect.
• Example 5 Suppression of the AED-induced AR transcriptional activity in the presence of HF.
• compounds 4, 6, 8 and 10 were examined for their capacity to antagonize AED-induced AR transactivation in the presence of HF.
• PC-3 cells were transiently with pSG5 and the MMTV-CAT reporter plasmid.
• HF AED-mediated AR transcription activity by about 40%.
• the compounds tested decreased AED-mediated AR transcription activity by about 75%.
• Example 6 Steroid Hormone Specificity of DHEA Metabolites (No. 4, 6, 8, & 10).
• the estrogen receptor (ER)-positive MCF-7 cell line was transfected with a CAT reporter plasmid containing an estrogen response element linked to the CAT gene.
• PC-3 cells were transfected with MMTV-CAT reporter and progesterone receptor (PR) or glucocorticoid receptor (GR) to test the steroid hormone specificity of compounds 4, 6, 8 and 10. All 4 compounds have some estrogenic activity and only compound 4, which has a 17 ⁇ -ethynyl group, shows some weak PR activity. None of these four compounds showed any GR activity.

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• 2000
  • 2000-09-28 CA CA2670236A patent/CA2670236C/en not_active Expired - Fee Related
  • 2000-09-28 AT AT08003806T patent/ATE501722T1/de active
  • 2000-09-28 DE DE60045751T patent/DE60045751D1/de not_active Expired - Lifetime
  • 2000-09-28 EP EP00967114A patent/EP1228083A2/de not_active Ceased
  • 2000-09-28 WO PCT/US2000/026848 patent/WO2001023405A2/en active Application Filing
  • 2000-09-28 CA CA2669753A patent/CA2669753C/en not_active Expired - Fee Related
  • 2000-09-28 CA CA002386095A patent/CA2386095A1/en not_active Abandoned
  • 2000-09-28 EP EP08003806A patent/EP1955700B9/de not_active Expired - Lifetime
  • 2000-09-28 EP EP10181352A patent/EP2322182A1/de not_active Withdrawn
  • 2000-09-28 PT PT08003806T patent/PT1955700E/pt unknown
  • 2000-09-28 EP EP07012604A patent/EP1832598A3/de not_active Withdrawn
  • 2000-09-28 DK DK08003806.0T patent/DK1955700T3/da active
  • 2000-09-28 AU AU77363/00A patent/AU7736300A/en not_active Abandoned
• 2007
  • 2007-08-07 US US11/835,334 patent/US7776845B2/en not_active Expired - Fee Related
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• 2010
  • 2010-06-03 US US12/792,942 patent/US7906497B2/en not_active Expired - Fee Related
  • 2010-12-01 US US12/957,661 patent/US8076316B2/en not_active Expired - Fee Related
• 2011
  • 2011-11-29 US US13/306,141 patent/US8367646B2/en not_active Expired - Fee Related

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